alarmtimer: Prepare for PREEMPT_RT
authorAnna-Maria Gleixner <anna-maria@linutronix.de>
Tue, 30 Jul 2019 22:33:49 +0000 (00:33 +0200)
committerThomas Gleixner <tglx@linutronix.de>
Thu, 1 Aug 2019 18:51:23 +0000 (20:51 +0200)
commit51ae33092bb8320497ec75ddc5ab383d8fafd55c
tree89d13ad76dd696c90cf93bc3b15cc6755c7f273d
parent850377a875a481c393ce59111b0c9725005e0eb4
alarmtimer: Prepare for PREEMPT_RT

Use the hrtimer_cancel_wait_running() synchronization mechanism to prevent
priority inversion and live locks on PREEMPT_RT.

[ tglx: Split out of combo patch ]

Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20190730223828.508744705@linutronix.de
kernel/time/alarmtimer.c